Vacuum cleaner



FIG. 1 is a front and left-side perspective view of a vacuum cleaner showing our new design;

FIG. 2 is a rear and right side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof. 

CLAIM The ornamental design for a vacuum cleaner, as shown and described. 